Self-Seek, Parity And Wait/Spin Jumpers; Hard Disk Drive Configuration Jumper Functions - HP 9000 300 Series Service Handbook

Table 3-7. Hard Disk Drive Configuration Jumper Functions
Jumper Function
Label
ss
Self-Seek;
In disabled.
Out enabled. (Default) Drive self-tests at turn-on.
LED is ON during test, OFF after self-test passes.
Flashes if an error is detected.
EP Enable Parity
In
=
enabled.
Out= disabled. (Default) Controls parity checking of
data on SCSI bus.
ws
Wait/Spin
In = enabled. Requires a stop/start unit command to
spin drive motor.
Out = disabled. (Default) Drive motor starts
automatically at turn-on and is ready within 20 seconds.
AO, AI, A2 SCSI Bus Address; AO is least significant bit. Shipped
with address 6 set (jumpers on AI and A2).
Self-Seek, Parity and WaitJSpin Jumpers
Hard disk drive jumpers SS, EP, and WS are factory set to the 'Out' condition;
no jumpers installed. If you want to change these functions, use a pair of
needlenose pliers to remove and/or install jumpers as required.
3-18 Configurations